F250 Speedometer
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Joined: Jan 2007
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F250 Speedometer
Yesterday my 2006 F250 Heavy Duty Truck Speedometer got stuck at about 35 mph, but I was stopped at a light. On acceleration the speedometer jumped up 15-20 mph (showing 50-55mph while I was only going 5-10 mph). Had to do some highway driving and during this the speedometer showed over 100 mph – so I used other traffic and my tachometer as a guide to my actual speed. Over the course of the day the stopped speed gradually declined to 28, then 24, then 15, then 12, then 8, then 5, and finally showed the correct 0 speed while stopped. It has been very cold here (-25 lows to 20's) not sure if this is part of the problem. This morning the speedometer appears to be working fine. What's going on - is this a difficult repair?
Laughing Gas
Joined: Oct 2003
Posts: 1,082
Likes: 93
From: VA/NH
Mine has done that a couple of times since I've had it. It only lasts a short time for me. I don't want anyone going into my dashboard so I didn't get it fixed. It hasn't done it in a couple of months.
Senior User
Joined: Dec 2004
Posts: 171
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From: Las Vegas, NV
my 06 had the crazy speedometer problem this weekend, stuck at 55, then went to 35 when I was stopped, then stayed about 40 MPH over what my GPS unit read for MPH, then Sunday night it finally went back to normal. Anyone know what the cause of this problem is?
Logistics Pro
Joined: Nov 2004
Posts: 4,795
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Same thing happened to me this morning - 2006 F350 CC - purchased new in December 2006, about 2,500 miles on it now.
I was doing about 50 mph when I looked at my speedo - it was on about 85 mpg and slowly rose to 95 mph. Came to a stoplight and it went down to about 45 mph (while I was stopped). Stayed kind of erratic. I stopped at a store and shut the engine off. After starting it back up, it seemed to read okay.
Nothing else in the truck seems to be wrong (all fo the other gauges seem to be reading okay, including the rpms).
It's been cold here (Central NY) for the past week, but today in was in the 20's, so the temps shouldn't be the problem.
I was doing about 50 mph when I looked at my speedo - it was on about 85 mpg and slowly rose to 95 mph. Came to a stoplight and it went down to about 45 mph (while I was stopped). Stayed kind of erratic. I stopped at a store and shut the engine off. After starting it back up, it seemed to read okay.
Nothing else in the truck seems to be wrong (all fo the other gauges seem to be reading okay, including the rpms).
It's been cold here (Central NY) for the past week, but today in was in the 20's, so the temps shouldn't be the problem.
Logistics Pro
Joined: Nov 2004
Posts: 4,795
Likes: 47
Just searched the TSB's on this site....here is the one for the speedo problem..
https://www.ford-trucks.com/tsb/full...php?tsb=06-7-4
https://www.ford-trucks.com/tsb/full...php?tsb=06-7-4
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